FORMALIN (as FORMALDEHYDE)‡
Chemical Identification | |
---|---|
CAS # | 50-00-0 |
Formula |
CH₂O |
Synonyms |
formic aldehyde; lysoform; methanal; oxomethane; oxymethylene solution; paraform; formaldehyde (solution) |
Physical Properties | |||
---|---|---|---|
Physical description | Nearly colorless gas with a pungent, suffocating odor. | ||
Boiling point | 214°F | Molecular weight | varies |
Freezing point/melting point | -134°F | Vapor pressure | 1 mmHg |
Flash point | 185°F | Vapor density | 1.04 |
Specific gravity | Ionization potential | 10.88 eV | |
Lower explosive limit (LEL) | 7% | Upper explosive limit (UEL) | 73% |
NFPA health rating | 3 | NFPA fire rating | 2 |
NFPA reactivity rating | 0 | NFPA special instruction | |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Monitoring Methods Used by OSHA | ||||||
---|---|---|---|---|---|---|
Analyte code (IMIS no.) | ||||||
Sampling group | ||||||
Sampler/Sampling media | ||||||
Sampling time* |
|
|||||
Sampling volume (TWA)* |
|
|||||
Sampling flow rate (TWA)* |
|
|||||
Sampling volume (STEL/Peak/C)* |
|
|||||
Sampling flow rate (STEL/Peak/C)* |
|
|||||
Analytical method instruments | ||||||
Method reference | ||||||
Notes | See FORMALDEHYDE. Do NOT use passive monitors to sample for formalin. |
|||||
Special requirements |
|
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
Wipe Method | |
---|---|
Sampler/Sampling media |
|
Bulk Method |
---|
|
On-Site Screening Techniques | ||||||
---|---|---|---|---|---|---|
Device | ||||||
Model/Type | ||||||
Sampling information (see manufacturer instructions) |
Exposure Limits | |||||||
---|---|---|---|---|---|---|---|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
|||||
PEL-TWA |
0.75 ppm [0.5 ppm Action Level] |
REL-TWA |
0.016 ppm |
TLV-TWA |
0.1 ppm [2016] |
PEL-TWA |
0.75 ppm [0.50 ppm Action Level] |
PEL-STEL |
2 ppm |
REL-STEL |
|
TLV-STEL |
0.3 ppm [2016] |
PEL-STEL |
2 ppm |
PEL-C |
|
REL-C |
0.1 ppm [15 minutes] |
TLV-C |
|
PEL-C |
|
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Notes: |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens. |
Notes:
respiratory sensitizer (RSEN), dermal sensitizer (DSEN) |
Notes:
See California Code of Regulations; Title 8, §5217. Formaldehyde. |
||||
Health factors: See NIH-NLM PubChem. | IDLH |
20 ppm |
|||||
Carcinogenic classifications: IARC-1, NIOSH-Ca, NTP-R, OSHA-Ca, TLV-A1, EPA-B1 |
Notes:
Ca |
||||||
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
1 ppm/10 ppm/40 ppm |
Additional Resources and Literature References |
---|
NOAA: CAMEO Chemicals - Formaldehyde, solutions (formalin) (corrosive) NIOSH: Pocket Guide to Chemical Hazards - Formalin (as formaldehyde) Literature References
|
Last Updated Date : 12/29/2020